Acoustic panel



FIG. 1 is a top view of the acoustic panel.

FIG. 2 is a bottom view of the acoustic panel.

FIG. 3 is a left view of the acoustic panel.

FIG. 4 is a right view of the acoustic panel.

FIG. 5 is a front view of the acoustic panel. The broken lines form no part of the claimed design.

FIG. 6 is a rear view of the acoustic panel; and,

FIG. 7 is a perspective view showing the front and left side of the acoustic panel. The broken lines form no part of the claimed design.

The broken lines illustrate a base or stand attached to the claimed acoustic panel and form no part of the claimed design.

The claimed acoustic panel is a free-standing, concave surface designed to optimize the reflection of sound waves from an acoustic musical instrument to the player's own ears. 

The ornamental design for an acoustic panel, as shown and described. 